Examlex
At one instant of time a rocket is traveling in outer space at 2500 m/s and is exhausting fuel at a rate of 100 kg/s.If the speed of the fuel as it leaves the rocket is 1500 m/s, relative to the rocket, the thrust is:
Hierarchical Classification
A system of organization where entities are arranged in a graded order from broad to specific categories, often used in biology to classify organisms.
Seriation
The cognitive ability to arrange objects in order according to size, shape, or any other attribute.
Concrete Operational Stage
A stage in Piaget's theory of cognitive development where children (approximately 7 to 12 years old) can think logically about concrete events.
Tangible Objects
Items that can be perceived through the sense of touch, having physical presence and form.
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